The specific ideas of the unknown ancients thousands of years ago are naturally impossible to deduce when there are not many clues.

Jiang Xian and the others temporarily suppressed the curiosity in their hearts and continued to walk forward.

The flashlight illuminates the surroundings, and there is a reflection of crystals, which makes the road paved with a hazy light, making the sides clearer.

The thick crystal pillars, under the illumination of the flashlight, clearly show everything on it.

They are the same crystals, they are all notched, and even the same technique is used, but there is a fundamental difference between the patterns on these crystal pillars and the murals - size.

Each notch on the crystal pillar is far larger than that on the mural, and it can be seen from the depth and traces of the notches that they are not the creations of the same group of people at all, and there is even a huge gap in tools.

The group walked forward carefully, Ling Xiaozi's eyes rolled, and he stood side by side with Jiang Xian: "The surname Jiang, if you look at the geological conditions and environment, there should have been several changes here in Tianchi, right?" ”

Jiang Xian glanced at him and nodded: "Yes, there should be no Tianchi at the beginning, after all, there is a volcanic crater below, and after many eruptions, it has formed its current appearance." ”

"Then you say...... When he made the gate, he probably didn't think about the flow of water, right? ”

Ling Xiaozi said thoughtfully: "Then the entrance we came in seemed to be a little wrong from the beginning. ”

"At the entrance, there are the Xuanwu Seven Residences, the Four Spirits of the Heavens, and the Xuanwu Main Water. If it is as originally designed in that year...... It should be the main fire that is more. ”

"Not really." Jiang Xian shook his head: "The crater lake, that is, the lake on the crater, has a process of formation. ”

"The volcanic ash and volcanic rocks brought up by the continuous eruption of the volcano formed mountain peaks, which enclosed the lava vent and then accumulated to cover the eruption...... Over time, the river has formed its current appearance. ”

"Although the formation of Tianchi may be less than a thousand years, the appearance of the prototype is at least 10,000 years ......."

Jiang Xian said this, his footsteps slammed, and his expression suddenly changed.

10,000 years......

According to traditional cultural and historical records, China is only a 5,000-year-old civilization, but with the appearance of Liangzhu and Jiahu inscriptions, these traces of civilization of more than 5,000 years and 8,000 years, many people have come out of a consensus in their hearts - the civilization of China is longer than recorded in history.

Especially in Yunmengze, the discoveries in these places in southern Yunnan also corroborate these.

"If we say that this place was actually cast and completed over thousands of years, it seems that ancient humans can really intervene."

"There was something wrong with that inference."

Jiang Xian's face showed contemplation, he looked around, under the effect of time, these original volcanic ash has become extremely solid, even harder than many rock walls.

He looked at the rushing river beside him, it seemed to have flowed like this since ancient times, but he knew that it was just an illusion.

"The people who built this place in the first place, didn't they think about the situation of this place becoming a crater lake? Did you think about how to maintain its own structure in several eruptions? ”

His gaze swept around again, and Jiang Xian's mind recalled the process of being swept into here by the impact of the current, the turbulent water that fell vertically, and the river that gradually turned into a changing river. I didn't think much about it at the time, but when I looked back at this time, I could clearly feel that whether it was the point of the fall or the river behind it, it had a guiding effect.

"Foreseen in advance, or prepared for anything?"

Such a thought flashed, Jiang Xian continued to look around, and already had the answer in his heart.

As a cave built on the rock wall of Tianchi and the entrance is close to the position below, except for this river, it is not flooded by the current, and it is obviously very well sealed, beyond the usual sealing method of the underground palace cemetery.

If this is not a forethought, he does not believe it.

Turning the corner and landing on the ground, Jiang Xian's eyes shrank sharply.

The people behind him were also stunned, a corner, a turn, and the crystal palace on the road came to an abrupt end.

The flashlight shone ahead, and the ground was full of gravel, and some tiled stone slabs, and the walls on both sides were just normal rocks and bluestones.

There are no crystal pillars on the ground and on the top, not even stone pillars.

From a dreamy and gorgeous scene to such a simple picture at once, they were a little uncomfortable for a while.

After a pause for a few seconds, Jiang Xian and the others continued to move forward.

However, just after taking a few steps, everyone present suddenly stopped.

Everyone's expressions were solemn, and they immediately gathered together, looking around back to back, their eyes full of vigilance and caution.

Smack......

Smack......

Smack......

A clear sound came from all around, it was like footsteps, but it was more crisp than normal footsteps, gradually expanding from the subtlety of the beginning, as if hundreds of people were coming from afar, constantly approaching them.

Everyone's ears trembled slightly, listening to the sounds.

Closer, closer, closer......

When the sound appeared a hundred meters away from them, it suddenly stopped.

There was silence all around, and only the sound of running water not far away could be heard.

Such a drastic change caught several people off guard, and they couldn't help but be stunned for a moment, and then looked at Jiang Xian in unison.

Jiang Xian's expression was calm, his eyes looked around, even with his acuity, he didn't find any hidden traces around,

But the sounds just now were real, and they weren't coming from one place, they were coming from all directions, from all over the world. The thought in his heart moved slightly, and he looked around again, but still didn't find it.

He waved his hand and motioned for everyone to move on, cautiously surveying their surroundings.

The pace of the crowd slowed down, and they focused more on probing the surrounding situation.

Zhang Shuwen and the others had their hands on their waists, ready to pull out their pistols at any time.

30 meters, 50 meters, 100 meters......

As the crowd walked farther and farther away, the voice seemed to be an illusion of their collective generation, and it never appeared again.

The cautious group walked downward, and after another detour, their steps stopped, and nine dark passages appeared in front of them.

The entrances to these passages are generally similar, with no signs or traces, and all extend downward.

The rushing water next to it forks here, branching out into five tributaries that pour into five roads.

Everyone's eyes couldn't help but fall on Jiang Xian, this kind of arrangement of choosing a road, the simpler it is, the more difficult it is to figure out. Because it is purely a matter of luck when it is designed, by feeling, no matter how high your knowledge is, no matter how much ability you have, you have to rely on luck to make a choice.

Fortunately, Jiang Xian doesn't need to try his luck.

The rough map in his mind was presented, and he immediately knew which area each of the nine passages led to.

What is dangerous and what is safe is clear at a glance under the guidance of the map.

"Let's go, come with me."

As he spoke, he walked towards a hole, a hole where there was no running water.

Ling Xiaozi raised his eyebrows unexpectedly, and followed without saying anything, and several people with credit knives followed closely behind the two shopkeepers, Zhang Shuwen had a trace of doubt in his eyes, looked at the surrounding waterways, and hurriedly followed.

The cave is still a passage that extends downward, and the walls on both sides are not smooth, and there are even many holes.

The ground is covered with large swaths of gravel, but there is very little sharp side, as if the edges and corners have been smoothed out by the wind and rain of the years.

Everyone walked forward, unable to avoid the dense gravel, and the feeling under their feet was as if they were stepping on a cobblestone road.

The rounded stones seemed to have a massage effect, but these were not fixed to the ground after all, and when they touched their feet, some of the stones would slide to the side under the pressure.

Everywhere I walked, the stones were all more messy, and the gaps were a little bigger.

Xiang Yunfei's gaze followed the flashlight, and he quickly took the surrounding environment into his eyes, and soon came to a conclusion.

"The distance between the stones is relatively regular, except for the road we walked, there was not much distance between them. Obviously, we should be the first people to walk this road......" He looked at Zhang Shuwen next to him and gestured with his eyes.

Zhang Shuwen shook his head and continued to walk forward.

After experiencing Weihu Mountain, he knew that professional matters should be handed over to professionals.

They may have good strength, but in terms of professionalism, there is no way to compare with Jiang Xian and others, and it is right to listen to each other.

Long Tiansheng, what if they didn't take this path? As long as you can finally touch each other and catch them.

And the dangers of these magical places cannot be dealt with just by relying on the guns and weapons in their hands.

Xiang Yunfei's expression was calm, he was very calm about Zhang Shuwen's choice, he was only responsible for putting forward the observed situation and thoughts, and how to act was still headed by Jiang Xian and others.

This section of the gravel road is not long, and it didn't take long for a few people to cross it.

The moment he left the stone road, Jiang Xian turned his head, and then the flashlight shone on the road behind him, his eyes carefully looked at the various exits of the stone road, and after a pause or two, he turned around and continued to walk forward.

Such an inexplicable action made everyone a little confused.

After walking more than 300 meters and not seeing the gravel road at all, he stopped again and motioned for everyone to rest in place.

"The surname is Jiang, what are you doing here?" Ling Xiaozi opened his mouth first and asked, "Why are you chattering, are you a Taoist priest or am I a Taoist priest?" ”

"Wait a minute." Jiang Xian turned around and looked at the people present: "There are some situations that need to be verified. ”

Lin Ruoxue looked at him, then looked around, with a hint of thought on her face, and the rest of the people were completely inexplicable, not knowing what could be verified by staying here.

A few minutes later, Jiang Xian stepped forward, gestured to everyone, and returned the same way.

It didn't take long for me to come back to the gravel road.

The light of the flashlight shone again, and everyone followed to look at it, and they were all a little puzzled. But the moment his gaze fell on the ground, Xiang Yunfei's complexion changed abruptly, and his flashlight kept moving, shining everywhere.

After a few seconds, he turned around sharply and looked at Jiang Xian: "Mr. Jiang...... Did you expect that? ”

"Expect the stones to return to their original places?"

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